"We've got an excellent forestry tour this year. It's expanded," Oberheim says. "The general research tours are very diverse this year. There's something for everyone, so it should be one of our best shows."

Oberheim says roughly two-thirds of the expected 45,000 attendees work in the agriculture industry.

The show is sponsored by Penn State's College of Agricultural Sciences and is held at the 2,100-acre Russell E. Larson Agricultural Research Center.